Create git tag before release build, small cosmetic changes.

[lystopad]

See #12661 for more details.
Changes:

• workflow will create git tag referencing to the last commit id in "checkout_ref" (branch name as for now)
• in case of not successful build -- second job will start and will remove git tag.
• workflow will now contain useful name which reflects released version, branch used to build artifacts and person who run workflow.
• latest docker base images debian:12.8-slim

[michelemodolo]

Fine for me: approved.
Just remember to remove the linked tags in the automation which periodically purges images, otherwise we'd end up with a forest of orphaned tags.